Quantum physics of atoms, photons and phonons 

The Treutlein group’s research is focused on the quantum physics of atoms, photons and phonons and their interactions. Atoms, light and nanomechanical oscillators are among the best controlled quantum systems. We exploit this control for novel experiments on the foundations of quantum physics and for developing new applications in quantum technology, with a specific focus on quantum metrology and quantum networking.

Our group has developed expertise with three experimental platforms: ultracold atoms in chip-based magnetic and optical traps, miniaturized atomic vapor cells near room temperature, and membrane optomechanical systems. All three systems have in common that they offer a light-matter quantum interface that allows for quantum-limited control, detection and interactions of a massive many-particle system with light. We harness this interface for experiments on the foundations of quantum physics with massive systems of increasing size and complexity, to engineer light-mediated interactions between different massive quantum systems, and to demonstrate new approaches to quantum networking and quantum metrology. Over the years, we have reported a number of experimental breakthroughs, often based on new concepts and ideas that we developed in our group or in close collaboration with our theory collaborators.

Our group is part of the Basel Quantum Center and the Swiss Nanoscience Institute and sustains a number of fruitful collaborations with research groups around the world.